Avid Juicy 3 Bleed Issue

I've just bled my Avid Juicy 3 brakes for the first time and have an issue with the front brake, the rear one worked out ok. I bled the front an when I pull on the brake, the lever now has no bite to it and just flops back and forth rather than popping back into position after pulling it. I've tried re bleeding it but this didn't work. Anyone got any ideas? Got some Juicy Carbons to do after this...

If the pistons are free and clear....adjust the reach adjust screw to get them to bind. if that doesnt get you close enough, you will have to rebleed the brakes. not a whole rebleed, just a fillem up procedure. put in the bleed kit, making sure you use NEW fluid and have pumped all the air out of the fluid, push more fluid in the system making sure you follow the instructions for not putting in air and releasing the lever only as you inject fluid.

I'm not sure if this is the correct spot to ask or if I should start a new thread...

My issue: I was bleeding Juicy3 brakes. The back set worked fine. When bleeding the front I had flushed the line and began drawing the air from the caliper when I realized that I had not secure the brake lever. I secured the lever and continued drawing air from the caliper. When I released the brake lever to refill the master the entire system is frozen. I cannot move fluid from caliper syringe at all or the lever/master syringe at all and the lever is dead (free swinging). (the wheel/disc spin freely)
Has anyone experienced this? Know the cause? Most importantly, a solution?

I think this is caused by the white plastic piston things in the brake expanding and getting stuck in the down position, you can buy replacement kit or use a dremel to sand it down to make it skinnier so it freely moves in the brake.

its the plastic that holds the rubber seal that gets too big, you will know if it has expanded if it doesnt freely fall in and out of the handle.

I had to do it with my Juicy 7s and it was easy to just sand it with a dremel, attach it to the dremel like a bit and then spin it on a piece of sand paper (a drill will work too). Just sand it down it until it moves freely in the housing.